Publisher's Synopsis
Excerpt from Catalogue des Oiseaux d'Europe: Pour Servir de Compl�ment Et de Suppl�ment A l'Ornithologie Europ�enne de Degland Et Gerbe (1867)
Ju'est-cc qu'une sous-espece? L'introduction de ce tenue, en Zoolo gie, est relativement r�cente. Lille est due aux naturalistes am�ricains qui, faisant remarquer combien l'expression de Vari�t� est vague, propo serent de lui substituer celle de sous - esp�ce pour d�signer exclusive ment les Vari�t�s locales ou g�ographiques.
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